RE: st: combining two variables

Thanks, I've figured it out by reading everyone's comments. Very
helpful!
JSM
-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
Sent: Wednesday, March 07, 2007 16:50
To: statalist@hsphsun2.harvard.edu
Subject: RE: st: combining two variables
Tell us your rules, and we'll suggest some code.
Nick
n.j.cox@durham.ac.uk
Moore, Jesse
> Will this work for more than two variables? I'm working with a
> similar situation, but with 7 variables.
Nick Cox
> Some very complicated solutions here!
>
> Consider:
>
> gen newvar = max(var1, var2) if missing(var1, var2)
>
> Logic:
>
> If just one of var1 or var2 is missing, then -missing()- will return
> true.
>
> In that case, max(var1, var2) will
> return the non-missing value in question.
>
> If both are missing, then you get missing returned, but that is fair
> enough.
>
> If neither is missing, missing is returned.
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